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Washington, United States

Fall City · Air quality

Sunday, Oct 25 · America/Los Angeles

Fall City air quality

US air quality index

38

Good

US EPA scale

  1. Good0–50Current category
  2. Moderate51–100
  3. Unhealthy for sensitive groups101–150
  4. Unhealthy151–200
  5. Very unhealthy201–300
  6. Hazardous301–500+

A higher US AQI indicates more air pollution and greater health concern. Categories and pollutant concentration units are different measures.

Understand the EPA scale

All pollutants

PM1
4 µg/m³
PM2.5
7.1 µg/m³
PM10
5 µg/m³
Ozone
14.8 µg/m³
Nitrogen dioxide
10 µg/m³
Sulfur dioxide
0 µg/m³
Carbon monoxide
185 µg/m³
European AQI (separate scale)
1